   (let [path-prefix (-> request :twixt :path-prefix)
         path (:uri request)]
     (when (match? path-prefix path)
-      (tracker/trace
+      (t/trace
         #(format "Handling asset request `%s'." path)
         (let [[requested-checksum asset-path] (parse-path path-prefix path)
               twixt (:twixt request)

             [less :as less]
             [memory-cache :as mem]
             [utils :as utils]
             [tracker :as tracker]]
            [ring.util
             [response :as r]
             [mime-type :as mime]]))

      ;; that might compile.
      development-mode (fs/wrap-with-filesystem-cache (:cache-folder twixt-options) resolver)
      production-mode mem/wrap-with-sticky-cache
      development-mode mem/wrap-with-invalidating-cache
      true wrap-with-tracing)))

(defn wrap-with-twixt-setup
  "Wraps a handler with another handler that provides the :twixt key in the request object.
